NGK ILKAR7B11 spark plug for the 2009-2015 Toyota Corolla 4-cylinder 1.8L and other vehicles fires the air-fuel mixture in the cylinder with an iridium alloy center electrode. Its high-grade pure alumina ceramic helps keep the plug from overheating and supports reliable starts.
A worn plug can show up as hard starting, rough idle or a misfire. Failing ignition coils, clogged fuel injectors or a vacuum leak can be behind those signs too, so track down the cause before you buy plugs.
This plug covers a wide range of models, and the 2010-2015 Toyota Prius 4-cylinder 1.8L and the 2012-2015 Toyota Prius Plug-In 4-cylinder 1.8L each take four per engine. If your car is not named here, look up its year and engine on the Buyer's Guide tab.
Fit and size
Build and materials
Interchange: 4912
This part cross-references / interchanges with the following part numbers:
Is this the right spark plug for a 2009-2015 Toyota Corolla 4-cylinder 1.8L?
Yes. The NGK ILKAR7B11 fits the 2009-2015 Toyota Corolla 4-cylinder 1.8L, which takes four plugs per engine.
Can I use this as a spark plug for the 2010-2015 Toyota Prius 4-cylinder 1.8L?
Yes. The NGK ILKAR7B11 fits the 2010-2015 Toyota Prius 4-cylinder 1.8L, and that engine takes four.
What is the center electrode on NGK iridium spark plugs like the ILKAR7B11 made of?
It is a fine wire iridium alloy, and iridium's density is six times that of platinum. The ground electrode has a platinum tip.
Do NGK spark plugs in the Laser Iridium line have a copper core?
Yes. This plug has a solid core of 98% pure copper for heat dissipation and conductivity, plus trivalent metal plating for anti-corrosion and anti-seizing properties.
Is NGK stock number 4912 the same plug as the ILKAR7B11?
Yes. 4912 is NGK's stock number for the ILKAR7B11 Laser Iridium spark plug, so either number finds this plug.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
